Loss Simulation Analysis and Optimization of U-Groove Leaky Coaxial Cable

Abstract EN

Leakage coaxial cable is a kind of coaxial cable with various slot structures on the outer conductor of the cable.

It can transmit signal and transmit or receive signal and has dual functions of signal transmission line and antenna.

Leakage cable has the advantages of strong environmental adaptability, uniform signal coverage, and less attenuation.

It is not only widely used in closed or semiclosed space with high signal reception quality, such as tunnels, subway, underground parking lot, and elevators but also can realize security and theft-proof monitoring and protection in some areas, such as oil wells, mining fields and natural resource protection areas, military fortresses, museums, airports, banks, and schools.

This paper introduces the classification and electrical parameters of leaky coaxial cables.

On the basis of U-groove leaky coaxial cables, the relationship between the parameters of groove holes in U-groove and the loss of leaky coaxial cables is simulated and analyzed by HFSS software.

The improved method of U-groove structure is obtained, and the curved hook-groove leaky coaxial cables are designed according to this method.

The simulation results show that the coupling loss of the cable is lower than that of the U-groove leakage cable, and the transmission loss is still within the national standard.

It lays a theoretical foundation for the design and development of leaky coaxial cable with low coupling loss.